88 GEOLOGICAL SURVEY OF WISCONSIN. 



AT WESTERN UNION JUNCTION. Feet. 



Earth 147 



Lime rock 233 



Shale 200 



Lime rock 285 



Sandstone 1 100 



Sandy lime 141 



Struck St. Peters Sandstone 2 1106 



Depth of well 3 12tj3 



AT MADISON. Feet. 



Earth 75 



Sandstone 525 



Shale 4 



Second Sandstone . . . 185 



Trap rock 5 



Total depth 795 



Water does not rise above surface of ground, but it supplies a large pump, without 

 any apparent loss of volume. 



MINERAL SPRINGS. In addition to the analysis of Wisconsin 

 spring waters given in previous reports of the survey, two are especi- 

 ally noteworthy. 



Prof. C. F. Chandler, Ph. D., Chemist to the New York School of 

 Mines, gives the following analysis of the water of the Beloit lodo- 

 Magnesian springs : 



Grains in 1 gallon. 



Chloride of Sodium 0.3362 



Bromide of Sodium trace. 



Iodide of Sodium 0.0049 



Bi-carbonate of Soda . 1406 



Bi-carbonate of Magnesia 12.2803 



Bi-carbonate of Lime 14 . 5196 



Bi-carbonate of Iron 0.0396 



Sulphate of Lime . 1326 



Sulphate of Potash 0.3123 



Phosphate of Soda 0.0104 



Alumina . 0590 



Silica 0.7581 



Organic Matter trace. 



Total per U. S. gallon of 231 cubic inches 28.5936 



Prof. Gustavus Bode, Chemist to the Wisconsin Geological Survey, 

 gives the following analysis of the water of a very remarkable ar- 

 tesian well at Sheboygan: 



> Struck small flow. 



a Pound 15 feet limestone in the eandatone. 



8 Sandstone again to bottom mixed with red rock. 



